Schieff



No. 62|,7|6. "Patented Mar. 2|, |895.

' A. scHANscHlEFF &"A. E. HonGsoN.

SECONDARY BATTERY FLAT-E.

(Application filed Oct. 17, 1898.)

UNrrED STATES 4PATENT EEicE.

ALEXANDER scHANsoHIEEE-AND ALBERT EDWARD HoDesoN, oE HALIFAX,

' ENGLAND.

SECON DARY-BATTERY PLATE.

SPECIFICATION forming part of Letters Patent No. 621,716, dated March 21, 1899.

Application filed October 17| 1898. Serial. NO- 693y'784 (N0 mOdel.)

' ication.

Our invention relates to certain improvements in secondary batteries or electric accumulator-plates, the object being to provide by an improved construction a plate or grid possessing the required degree of strength and rigidity with comparative lightness and also providing very efcient locking facilities for holding the paste insame.

In the accompanying drawings are illustrated two forms of plates constructed according to our invention.

Figure l is an elevation of a portion of a single plate. Fig. 2 is a section on line fr, Fig. 1. Fig. 3 is asection showing the formed plate. Fig. 4 is a section of a part of a double plate, and Fig. 5 is a similar view showing the formed plate.

The single plate shown in Figs. 1 to 8 is made from a sheet of lead a, in which are openings b, such openings being produced by punching, pressing, rolling, or otherwise. The holes are preferably square or rectangular in shape, the metal portions or connectingwebs c remaining being, during the punching or shaping operation, formed concavo-conveX in section, with the double object of giving stiffness to same and providingedges against which the paste may hold. The paste when applied forms heads f, Fig. 3, projecting from the holes on the face or side of the plate, as shown in Fig. 2, and on the other side it engages with the edges d d, which are formed in the punching operation and extend rearwardly from this face to the other side or face. This construction produces a series ofv ap- The plates may be used double, and in this case (see Fig. 4.) they are placed one against the other, with the rounded or convex surfaces of the webs c abutting. Recesses or chambers are thus formed between such abutting surfaces, which act as a lock for the paste, the heads ff of which project in the opposite direction to that they occupy in the single plate, as shown in Fig. 5. The two plates c may be soldered or burned in together along their edges or flanges g or secured together in any suitable way.

What we claim is- 1. 'Abattery-plate formed of two plates each having openings larger on one side of the plates than on the other, and V-shaped bars between the said openin gs, the two plates being secured to each other with the pointed edges of the V-shaped' bars together, and active material filling the openings and V- shaped bars, substantially as described.

2. A secondary-battery plate having openings therethrough; hollow V-shaped bars between the said openings, and active material filling said openings and V-shaped bars, substantially as described.

In testimony whereof we have hereunto set our hands in the presence of two subscribing witnesses.

ALEXANDER SCHANSCHIEFF.' ALBERT EDWARD HODGSON.

Witnesses:

I. B. HOWARD, GERvAsE APPLEYARD. 

